A method for manufacturing a rotor includes the following operations: the clamping of a workpiece in a grinding machine; the performance of one or more cylindrical grinding operations whereby a rotor shaft section is ground to the desired diameter with a cylindrical grinding disk; the performance of one more profile grinding operations whereby a rotor body is profiled with a profile grinding disk. During the manufacture of the rotor in the grinding machine, the workpiece is not undamped and the cylindrical grinding operations and the profile grinding operations are done with the same grinding machine.

The end face grinding method includes a structure rotating step of rotating a honeycomb structure based on a rotation axis in a direction orthogonal to the end face of the honeycomb structure, a grinding wheel reverse rotating step of using a grinding wheel disposed so that a grinding surface faces the end face and rotating the grinding wheel in a reverse rotating direction to a rotating direction of the honeycomb structure based on a rotation axis in the direction orthogonal to the end face; and a dry type grinding step of bringing the grinding wheel rotating in the reverse direction close to the rotating honeycomb structure to perform the dry type grinding of the end face.

The end face grinding method includes a structure rotating step of rotating a honeycomb structure based on a rotation axis in a direction orthogonal to the end face of the honeycomb structure, a grinding wheel reverse rotating step of using a grinding wheel disposed so that a grinding surface faces the end face and rotating the grinding wheel in a reverse rotating direction to a rotating direction of the honeycomb structure based on a rotation axis in the direction orthogonal to the end face; and a dry type grinding step of bringing the grinding wheel rotating in the reverse direction close to the rotating honeycomb structure to perform the dry type grinding of the end face.

Powder metal alloy engine hardware components may be finished using a combination of roughing and grinding techniques. An engine component may be rough ground with a grinding wheel at a relatively high rate of material removal. The engine hardware component may be semi-finished using a turning process. The engine hardware component may be finished using a grinding wheel.

Powder metal alloy engine hardware components may be finished using a combination of roughing and grinding techniques. An engine component may be rough ground with a grinding wheel at a relatively high rate of material removal. The engine hardware component may be semi-finished using a turning process. The engine hardware component may be finished using a grinding wheel.

A finishing device includes a finishing belt, a finishing belt holding device, a first drive configured to rotationally drive a workpiece about a workpiece axis, and a second drive configured to oscillate the workpiece and the finishing belt relative to another along the workpiece axis. The finishing belt holding device has a holding section configured to hold a portion of the finishing belt. The portion has an active area configured to finish a circumferential workpiece surface. The portion extends in a plane which is vertical when referring to the direction of gravity and extends in a horizontal direction when referring to the direction of gravity and when viewing in the running direction of the finishing belt. The finishing device includes a workpiece holding device defining a workpiece holding axis which is vertical when referring to the direction of gravity.

A finishing device includes a finishing belt, a finishing belt holding device, a first drive configured to rotationally drive a workpiece about a workpiece axis, and a second drive configured to oscillate the workpiece and the finishing belt relative to another along the workpiece axis. The finishing belt holding device has a holding section configured to hold a portion of the finishing belt. The portion has an active area configured to finish a circumferential workpiece surface. The portion extends in a plane which is vertical when referring to the direction of gravity and extends in a horizontal direction when referring to the direction of gravity and when viewing in the running direction of the finishing belt. The finishing device includes a workpiece holding device defining a workpiece holding axis which is vertical when referring to the direction of gravity.

A cleaning device for cleaning and/or polishing a surface having an aperture, such as a wheel rim contact surface of a motor vehicle or the like, comprises a housing, which has a rear rotary portion for rotating the housing about a rotational axis and a front fastening portion for releasably fastening a cleaning body; the cleaning body comprising a stabilising plate which faces the housing and has a centring pin that faces away from the housing and projects centrically towards the outside, and a cleaning means that covers the surface of the stabilising plate that faces away from the housing; and the fastening portion and the stabilising plate each having a corresponding connecting means for rotationally stable connection to one another.

A grinding arm for grinding workpieces with an inner profile with a grinding wheel. The grinding arm has a tube-shaped base body with a longitudinal axis, in which the grinding wheel is supported at one axial end region. A first drive for the grinding wheel is arranged in its other axial end region. A first transmission system transmits the rotation from the first drive to the grinding wheel. In order to adjust arbitrary angles of inclination of the grinding wheel in the grinding arm, the grinding wheel is arranged on a grinding spindle driven by the first transmission system and rotating around an axis of rotation. The grinding spindle is supported in a carrier body arranged in the base body rotatable around an axis perpendicular to the longitudinal axis as well as perpendicular to the axis of rotation, wherein the axis of rotation and the axis intersect.

A grinding arm for grinding workpieces with an inner profile with a grinding wheel. The grinding arm has a tube-shaped base body with a longitudinal axis, in which the grinding wheel is supported at one axial end region. A first drive for the grinding wheel is arranged in its other axial end region. A first transmission system transmits the rotation from the first drive to the grinding wheel. In order to adjust arbitrary angles of inclination of the grinding wheel in the grinding arm, the grinding wheel is arranged on a grinding spindle driven by the first transmission system and rotating around an axis of rotation. The grinding spindle is supported in a carrier body arranged in the base body rotatable around an axis perpendicular to the longitudinal axis as well as perpendicular to the axis of rotation, wherein the axis of rotation and the axis intersect.